Coolant Temp after Mobil 5W50 oil change
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From: Victoria, Canada
10' GLK
Coolant Temp after Mobil 5W50 oil change
Well, just did the first oil change myself in between scheduled maintnance, I got the vaccum pumped out all the oil and replaced it with Mobil 1 5W50 supersyn, the coolant temp was lowered.
The coolant temp needle usually sit slightly below the 100 degree celcius mark, but now, even in the morning traffic, it's at 80 mark.
maybe my thermostat got stuck open after oil change? just kidding...
what's your take?
The coolant temp needle usually sit slightly below the 100 degree celcius mark, but now, even in the morning traffic, it's at 80 mark.
maybe my thermostat got stuck open after oil change? just kidding...
what's your take?
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From: 43°38'N / 79°52'W
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Ummmm....
Isn't M1 5W50 recommended for the SLR only?/
The recommendations from AMG are that after May 2008 (the automotive fluid standards changed in May 2008) the following fluids should be used for AMG engines :
- Mobil 1 5W-40 for M156 engine (63er models)
- Mobil 1 0W-40 all other AMG engines (as well the AMG diesel engines that was used for the C 30 AMG)
- Mobil 1 5W-50 SLR engine
Before May 2008, the Mobil 1 0W-40 was used for the 63 models as well
Isn't M1 5W50 recommended for the SLR only?/
The recommendations from AMG are that after May 2008 (the automotive fluid standards changed in May 2008) the following fluids should be used for AMG engines :
- Mobil 1 5W-40 for M156 engine (63er models)
- Mobil 1 0W-40 all other AMG engines (as well the AMG diesel engines that was used for the C 30 AMG)
- Mobil 1 5W-50 SLR engine
Before May 2008, the Mobil 1 0W-40 was used for the 63 models as well
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Hey George. See you were hit with another Snow storm. Hope spring heads your way soon. Put my summers on today....
I am running 0W40 now as well. Switching to 5W40 at the next change in a few weeks on the advice of my shop foreman (summer temps)
I am running 0W40 now as well. Switching to 5W40 at the next change in a few weeks on the advice of my shop foreman (summer temps)
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From: Victoria, Canada
10' GLK
yes, our dealership recommend 0w40, but i have a few jugs of 5W50, and I see that our engine runs hotter than others, also, i may sacrifice a few miles per gallon which isn't a big issue. So, I did put the 5W50 in. No ill effects right now, let's see the long run. It's good for SLR, it's good enough for a 6.3
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2005 E55 ///AMG
I'm pretty sure your car has zero in common with an SLR...much specifically engine wise. 
Using the incorrect weight can also void your warranty if the dealer wants to and finds out. So unless 5w50 is in your owner's manual, I would stay away from it.
Using the incorrect weight can also void your warranty if the dealer wants to and finds out. So unless 5w50 is in your owner's manual, I would stay away from it.
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Well, i don't like to follow rules. That's why I put 5W50 and i know full well of the warranty part !
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But why oh why for the sake of saving a few bucks would you use up a few jugs of slick you had laying around in the garage beats me?? I for one wouldn't stray from the AMG recommended viscosity for the M156.
Just my 2 cents....It's your car you can do what you want with it
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Thread Starter
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Joined: Jul 2004
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From: Victoria, Canada
10' GLK
Well...I'm sure the 5W50 won't kill your engine (Kill your warranty maybe..lol)
But why oh why for the sake of saving a few bucks would you use up a few jugs of slick you had laying around in the garage beats me?? I for one wouldn't stray from the AMG recommended viscosity for the M156.
Just my 2 cents....It's your car you can do what you want with it
But why oh why for the sake of saving a few bucks would you use up a few jugs of slick you had laying around in the garage beats me?? I for one wouldn't stray from the AMG recommended viscosity for the M156.
Just my 2 cents....It's your car you can do what you want with it
Last edited by bwco; Nov 13, 2014 at 05:13 PM.
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When I had my F360, my Ferrari Master Mechanic recommended Mobile1 0W40 for daily Summer driving and Castrol 10W 60 for Track Days...
Last edited by NORTH 44 C63; Mar 26, 2009 at 07:26 PM.
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I wonder if we're maybe reading too much into this 
I don't think 5W-50 will hurt the engine at all..... although it may hurt your wallet 
I would assume the SLR engine needs it more since AMG/McLaren worked hard on squeezing a lot of power out of it. But supposedly, the 5W-50 is a better oil with more LDDP
I don't think 5W-50 will hurt the engine at all..... although it may hurt your wallet I would assume the SLR engine needs it more since AMG/McLaren worked hard on squeezing a lot of power out of it. But supposedly, the 5W-50 is a better oil with more LDDP
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From: 43°38'N / 79°52'W
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I wonder if we're maybe reading too much into this I don't think 5W-50 will hurt the engine at all..... although it may hurt your wallet I would assume the SLR engine needs it more since AMG/McLaren worked hard on squeezing a lot of power out of it. But supposedly, the 5W-50 is a better oil with more LDDP
I don't think 5W-50 will hurt the engine at all..... although it may hurt your wallet I would assume the SLR engine needs it more since AMG/McLaren worked hard on squeezing a lot of power out of it. But supposedly, the 5W-50 is a better oil with more LDDP
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E63 P30, CL500 Sport
I'd use the new 5W-40 that AMG is recommending. Be very careful when getting it though because most of the Mobil 5W-40 sold at Auto stores are actually for trucks and diesel. I think the dealer is able to special order the correct 5W-40 for you.
0W-40 is not the recommended anymore for our 63 engines (as of May 2008).
I know of a couple of people that have been using the 5W-50 on their E55 with no problems what so ever, but never heard it being used on the 63 engines.
0W-40 is not the recommended anymore for our 63 engines (as of May 2008).
I know of a couple of people that have been using the 5W-50 on their E55 with no problems what so ever, but never heard it being used on the 63 engines.
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Anything W/4Wheels
I'd use the new 5W-40 that AMG is recommending. Be very careful when getting it though because most of the Mobil 5W-40 sold at Auto stores are actually for trucks and diesel. I think the dealer is able to special order the correct 5W-40 for you.
0W-40 is not the recommended anymore for our 63 engines (as of May 2008).
I know of a couple of people that have been using the 5W-50 on their E55 with no problems what so ever, but never heard it being used on the 63 engines.
0W-40 is not the recommended anymore for our 63 engines (as of May 2008).
I know of a couple of people that have been using the 5W-50 on their E55 with no problems what so ever, but never heard it being used on the 63 engines.
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C63
You do realize that coolant temp is controlled by the thermostat and the oil quality wont make any consistent or noticable difference in coolant temp.
You also dont have to use Mobil 1, it is only recommended.
There are better oils out there and you wont lose your engine warranty.
Mercedes has had this same uptight "Approved" list over the last 32 years I have been doing maintenance on them. I dont trust their recommendations regarding maintenance or engine oils. Just ask a Mercedes rep why the company got hit with a class action suit early in the new millenium because of thousands of damaged enigines in 1998 to 2001 vehicles. It cost Mercedes a reported $118 million.
You also dont have to use Mobil 1, it is only recommended.
There are better oils out there and you wont lose your engine warranty.
Mercedes has had this same uptight "Approved" list over the last 32 years I have been doing maintenance on them. I dont trust their recommendations regarding maintenance or engine oils. Just ask a Mercedes rep why the company got hit with a class action suit early in the new millenium because of thousands of damaged enigines in 1998 to 2001 vehicles. It cost Mercedes a reported $118 million.
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"Oil weight, or viscosity, refers to how thick or thin the oil is. The temperature requirements set for oil by the Society of Automotive Engineers (SAE) is 0 degrees F (low) and 210 degrees F (high).
Oils meeting the SAE's low temperature requirements have a "W" after the viscosity rating (example: 10W), and oils that meet the high ratings have no letter (example SAE 30). An oil is rated for viscosity by heating it to a specified temperature, and then allowing it to flow out of a specifically sized hole. Its viscosity rating is determined by the length of time it takes to flow out of the hole. If it flows quickly, it gets a low rating. If it flows slowly, it gets a high rating.
Engines need oil that is thin enough for cold starts, and thick enough when the engine is hot. Since oil gets thinner when heated, and thicker when cooled, most of us use what are called multi-grade, or multi-viscosity oils. These oils meet SAE specifications for the low temperature requirements of a light oil and the high temperature requirements of a heavy oil.
You will hear them referred to as multi-viscosity, all-season and all-weather oils. An example is a 10W-30 which is commonly found in stores. When choosing oil, always follow the manufacturer's recommendation."
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Anything W/4Wheels
Here's a quick crash course.....
"Oil weight, or viscosity, refers to how thick or thin the oil is. The temperature requirements set for oil by the Society of Automotive Engineers (SAE) is 0 degrees F (low) and 210 degrees F (high).
Oils meeting the SAE's low temperature requirements have a "W" after the viscosity rating (example: 10W), and oils that meet the high ratings have no letter (example SAE 30). An oil is rated for viscosity by heating it to a specified temperature, and then allowing it to flow out of a specifically sized hole. Its viscosity rating is determined by the length of time it takes to flow out of the hole. If it flows quickly, it gets a low rating. If it flows slowly, it gets a high rating.
Engines need oil that is thin enough for cold starts, and thick enough when the engine is hot. Since oil gets thinner when heated, and thicker when cooled, most of us use what are called multi-grade, or multi-viscosity oils. These oils meet SAE specifications for the low temperature requirements of a light oil and the high temperature requirements of a heavy oil.
You will hear them referred to as multi-viscosity, all-season and all-weather oils. An example is a 10W-30 which is commonly found in stores. When choosing oil, always follow the manufacturer's recommendation."
"Oil weight, or viscosity, refers to how thick or thin the oil is. The temperature requirements set for oil by the Society of Automotive Engineers (SAE) is 0 degrees F (low) and 210 degrees F (high).
Oils meeting the SAE's low temperature requirements have a "W" after the viscosity rating (example: 10W), and oils that meet the high ratings have no letter (example SAE 30). An oil is rated for viscosity by heating it to a specified temperature, and then allowing it to flow out of a specifically sized hole. Its viscosity rating is determined by the length of time it takes to flow out of the hole. If it flows quickly, it gets a low rating. If it flows slowly, it gets a high rating.
Engines need oil that is thin enough for cold starts, and thick enough when the engine is hot. Since oil gets thinner when heated, and thicker when cooled, most of us use what are called multi-grade, or multi-viscosity oils. These oils meet SAE specifications for the low temperature requirements of a light oil and the high temperature requirements of a heavy oil.
You will hear them referred to as multi-viscosity, all-season and all-weather oils. An example is a 10W-30 which is commonly found in stores. When choosing oil, always follow the manufacturer's recommendation."
thanks make alot of 0.01
